A pair of 3/4" round aluminium bench dogs with integral spring so that once positioned, they remain where placed. Exceptionally easy to add to any bench by just drilling with a 3/4" forstner bit a neat and upright hole where needed. Care however should be taken to ensure when drilling that the bench has adequate thickness to accept the dogs and that the location does not interfere with any vice equipment mounted under the bench. Supplied in pairs, size 19mm(3/4") diameter x 115mm(4.1/2") length.